CN108942083A - The method of external member and internal member elastic conjunction with the different coefficients of expansion - Google Patents
The method of external member and internal member elastic conjunction with the different coefficients of expansion Download PDFInfo
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- CN108942083A CN108942083A CN201810695111.7A CN201810695111A CN108942083A CN 108942083 A CN108942083 A CN 108942083A CN 201810695111 A CN201810695111 A CN 201810695111A CN 108942083 A CN108942083 A CN 108942083A
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- China
- Prior art keywords
- external member
- expansion
- mounting hole
- heating
- electromagnetic induction
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P11/00—Connecting or disconnecting metal parts or objects by metal-working techniques not otherwise provided for
- B23P11/02—Connecting or disconnecting metal parts or objects by metal-working techniques not otherwise provided for by first expanding and then shrinking or vice versa, e.g. by using pressure fluids; by making force fits
- B23P11/025—Connecting or disconnecting metal parts or objects by metal-working techniques not otherwise provided for by first expanding and then shrinking or vice versa, e.g. by using pressure fluids; by making force fits by using heat or cold
Abstract
The method that the present invention discloses a kind of external member with the different coefficients of expansion and internal member elastic conjunction, it include: the electromagnetic induction heater device for a) selecting stepwise adjustable, by in the mounting hole of fire end merging external member, corresponding heating temperature is arranged in corresponding external member difference coefficient of expansion region: heating temperature is=environment temperature+expansion temperature difference；B) switch for starting the electromagnetic induction heater device of stepwise adjustable implements heating to the mounting hole of external member according to preset heating temperature or heating time；C) after heating temperature or time reaching setting value, the electromagnetic induction heater device of stepwise adjustable can be with acoustooptic form automatic alarm, the fire end of the electromagnetic induction heater device of stepwise adjustable is taken out i.e. from the mounting hole of external member, fit-up gap is formed between internal member after mounting hole expanded by heating, qualified internal member is placed in rapidly in the mounting hole of external member at this time, external member and internal member, which are realized, after natural cooling is interference fitted.
Description
Technical field
The present invention relates to a kind of elastic conjunction method, it is larger and be only capable of passing through the method for heat expansion and cold contraction to be particularly suitable for magnitude of interference
The method for realizing metal parts quick assembling.
Background technique
Field is assembled in heavy industry, nothing larger for magnitude of interference buys oil and crimp mouth or can not force to be pressed into, be only capable of passing through heat
Contracting method realizes that the metal parts of assembly are not considering internal member low temperature undertissue or performance if freezing internal member merely
The condensed water for needing constantly to spray antirust agent, constantly wiping generation under the premise of changing, after cold charge, increasing, operation intensity is same
When, it still inevitably has condensed water and is oozed out from external member and internal member matching part, and then product is caused to get rusty risk；If simple
External member is heated, it is longer to be put into the heating furnace entirety heating and thermal insulation time, big energy-consuming, and inconvenient, easily becomes in production
Bottleneck process；Therefore consider that introducing induction heating mode carries out local heating.Actually encounter external member by two kinds and it is two or more,
The different components composition of material, and different parts are different from internal member fit tolerance, required heating swell increment and heat warm
Spend it is different, to simultaneously implement induction heating assemble feasibility propose severe challenge.
Such as with Mr. Yu's step-up gear planetary stage mechanism --- the assembly of planetary gear and its pin shaft, magnitude of interference maximum can
Up to 0.116 mm, external member upper and lower ends are cast iron quality (planet carrier), and intermediate position is bearing steel (planet wheel bearing),
In existing interference mounting process, each region heating temperature is difficult to be set separately and control.Therefore there is an urgent need to one kind for tight
Cooperate the convenient effective speedy erection system of precision parts.
Summary of the invention
It is an object of the present invention to whole heating external member method band when for the assembly of current tight fit precision parts
High energy consumption, the poor efficiency come, freezing internal member method are also easy to produce condensed water and cause rust hidden danger, and method of press-fitting is also easy to produce part by force
A series of problems, such as damage risk, provides a kind of new external member and internal member elastic conjunction with the different coefficients of expansion
Method.
The object of the present invention is achieved like this: a kind of external member with the different coefficients of expansion and internal member interference fill
The method matched, the specific steps of which are as follows:
A) the electromagnetic induction heater device for selecting stepwise adjustable corresponds in the mounting hole of fire end merging external member and contains
Corresponding heating temperature is arranged in part difference coefficient of expansion region: heating temperature is=environment temperature+expansion temperature difference；
B) switch for starting the electromagnetic induction heater device of stepwise adjustable, according to preset heating temperature or heating time to packet
The mounting hole for holding part implements heating；
C) after heating temperature or time reaching setting value, the electromagnetic induction heater device of stepwise adjustable can be with acoustooptic form certainly
Dynamic alarm, i.e., take out the fire end of the electromagnetic induction heater device of stepwise adjustable from the mounting hole of external member, mounting hole by
Fit-up gap is formed after thermal expansion between internal member, qualified internal member is placed in rapidly to the mounting hole of external member at this time
In, external member and internal member, which are realized, after natural cooling is interference fitted.
In the present invention: the fire end of the electromagnetic induction heater device of stepwise adjustable is the heating coil of segmentation winding,
They respectively correspond the different coefficient of expansion regions of external member, by selecting different operating current or working time, to difference
The external member mounting hole of the coefficient of expansion realizes the sectional-regulated of heating temperature.
In the present invention: by fire end merging external member mounting hole in when, also the different coefficient of expansion regions configuration with
It is heated the good temperature probe of object contact.
In the present invention: the external member mounting hole with the different coefficients of expansion refer to planet carrier up and down pin shaft hole and
The inner hole of planet wheel bearing, they must concentric locating before heating；The internal member is planetary gear pin shaft.
In the present invention: the maximum interference amount of elastic conjunction is 0.116 mm.
Innovation of the invention and advantage are: since the electromagnetic induction heater device by stepwise adjustable is Bu Tong swollen to having
The external member and internal member elastic conjunction of swollen coefficient, heating temperature can be by the coils of segmentation winding by operating current and work
Making the time accurately controls, and heating time is short, and low energy consumption, meanwhile, assembling process can also effectively avoid freezing from being wrapped by natural cooling
Hold risk of getting rusty caused by part assembly.When due to by the mounting hole of fire end merging external member, also in different coefficient of expansion areas
Configuration of territory and it is heated the good temperature probe of object contact, segmentally heating situation, timely artificial correction work can be monitored in real time
Program.The method that the present invention is directed to external member and internal member elastic conjunction with the different coefficients of expansion, it is not only easy to operate,
And heating and temperature control is accurate and operation is convenient, reduces labor intensity, can greatly improve assembly efficiency and assembling quality.
It is also an advantage of the present invention that: the maximum interference amount of elastic conjunction can achieve 0.116 mm.
Specific embodiment
Below by taking the planet carrier in 1.5WM wind-power electricity generation gear up unit as an example, the mounting hole of external member is planet carrier
The inner hole of upper and lower pin shaft hole and planet wheel bearing, internal member are planetary gear pin shaft, wherein the upper lower bearing pin of pin shaft and planet carrier
Hole cooperates diameter of phi 220,0.052 mm of upper/lower terminal maximum interference amount, the inner hole of pin shaft and interlude planet wheel bearing
Diameter of phi 220,0.045 mm of maximum interference amount.
The fire end of electromagnetic induction heater device is the multiple groups heating coil of segmentation segmentation winding, and every section of heating coil is equal
Can independently it regulate and control.
It is respectively 67 DEG C, 64 DEG C by the temperature difference that thermal expansion theoretical calculation formula needs, environment temperature is 30 DEG C, practical to heat
Temperature are as follows: the environment temperature+expansion temperature difference.Accordingly, it is determined that the heating temperature of two kinds of materials is respectively 97 DEG C and 94 DEG C.
The inner hole of pin shaft hole and planet wheel bearing must concentric locating up and down for planet carrier before heating.
By in the mounting hole of the fire end merging external member of electromagnetic induction heater device, segmentation winding is more in fire end
Group heating coil respectively corresponds external member difference coefficient of expansion region, according to 97 DEG C and 94 DEG C of correspondence heating temperature of setting, opens
The operating switch of the electromagnetic induction heater device of dynamic stepwise adjustable, respectively to the different coefficients of expansion of the mounting hole of external member
Implement heating in region.After heating temperature or time reaching setting value, the electromagnetic induction heater device of stepwise adjustable can be with sound
Light form automatic alarm, then from the mounting hole of external member take out electromagnetic induction heater device fire end, mounting hole by
Fit-up gap is formed after thermal expansion between internal member, qualified internal member pin shaft is placed in rapidly to the peace of external member at this time
It fills in hole, external member and internal member, which are realized, after natural cooling is interference fitted.
When it is implemented, operating current or working time that can be different by selection, the containing to the different coefficients of expansion
Part mounting hole realizes the sectional-regulated of heating temperature.
When it is implemented, by fire end merging external member mounting hole in when, also the different coefficient of expansion regions configuration with
It is heated the good temperature probe of object contact, can manually monitor the working condition in different heating region in this way, and according to reality
Situation implements manual intervention.
In assembly method of the present invention, it can be adapted for the elastic conjunction that maximum interference amount is 0.116 mm.
Above embodiments are not the schemes of the record to concrete restriction of the invention, according to claim, in conjunction with this field
Basic common sense, reach technical effect of the invention, also belong to the scope that seeks protection of the present invention.
Claims (5)
1. a kind of method of external member with the different coefficients of expansion and internal member elastic conjunction, which is characterized in that specific step
It is rapid as follows:
A) the electromagnetic induction heater device for selecting stepwise adjustable corresponds in the mounting hole of fire end merging external member and contains
Corresponding heating temperature is arranged in part difference coefficient of expansion region: heating temperature is=environment temperature+expansion temperature difference；
B) switch for starting the electromagnetic induction heater device of stepwise adjustable, according to preset heating temperature or heating time to packet
The mounting hole for holding part implements heating；
C) after heating temperature or time reaching setting value, the electromagnetic induction heater device of stepwise adjustable can be with acoustooptic form certainly
Dynamic alarm, i.e., take out the fire end of the electromagnetic induction heater device of stepwise adjustable from the mounting hole of external member, mounting hole by
Fit-up gap is formed after thermal expansion between internal member, qualified internal member is placed in rapidly to the mounting hole of external member at this time
In, external member and internal member, which are realized, after natural cooling is interference fitted.
2. the method for the external member according to claim 1 with the different coefficients of expansion and internal member elastic conjunction,
Be characterized in that: the fire end of the electromagnetic induction heater device of stepwise adjustable is the heating coil of segmentation winding, they are right respectively
The different coefficient of expansion regions for answering external member, by selecting different operating current or working time, to the different coefficients of expansion
External member mounting hole realizes the sectional-regulated of heating temperature.
3. the method for the external member according to claim 1 with the different coefficients of expansion and internal member elastic conjunction,
It is characterized in that: when by the mounting hole of fire end merging external member, also configuring in different coefficient of expansion regions and be heated object
Contact good temperature probe.
4. the side of the external member described in one of -3 with the different coefficients of expansion and internal member elastic conjunction according to claim 1
Method, it is characterised in that: the external member mounting hole with the different coefficients of expansion refers to planet carrier pin shaft hole and planet up and down
The inner hole of wheel bearing, they must concentric locating before heating；The internal member is planetary gear pin shaft.
5. the method for the external member according to claim 4 with the different coefficients of expansion and internal member elastic conjunction,
Be characterized in that: the maximum interference amount of elastic conjunction is 0.116 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810695111.7A CN108942083A (en) | 2018-06-29 | 2018-06-29 | The method of external member and internal member elastic conjunction with the different coefficients of expansion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810695111.7A CN108942083A (en) | 2018-06-29 | 2018-06-29 | The method of external member and internal member elastic conjunction with the different coefficients of expansion |
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| CN108942083A true CN108942083A (en) | 2018-12-07 |
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| CN201810695111.7A Pending CN108942083A (en) | 2018-06-29 | 2018-06-29 | The method of external member and internal member elastic conjunction with the different coefficients of expansion |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109323804A (en) * | 2018-12-18 | 2019-02-12 | 中国航发沈阳发动机研究所 | A kind of anti-extrusion deformation formula gas circuit leakage test part support construction |
| CN112059534A (en) * | 2020-09-07 | 2020-12-11 | 新子元(上海)科技发展有限公司 | Hot-assembling method for improving difficulty in assembling parts |
| CN112378305A (en) * | 2020-11-02 | 2021-02-19 | 杭州汽轮机股份有限公司 | Cylindrical pin assembling method based on interference magnitude control |
| CN114850781A (en) * | 2022-05-10 | 2022-08-05 | 中国水利水电夹江水工机械有限公司 | Assembly method of winding drum and winding drum shaft of large ship lift |
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2018
- 2018-06-29 CN CN201810695111.7A patent/CN108942083A/en active Pending
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| US20020062548A1 (en) * | 2000-11-30 | 2002-05-30 | Ketterer Charles P. | Method and apparatus for constructing a segmented stator |
| CN2522221Y (en) * | 2002-01-18 | 2002-11-27 | 南昌华东铁路经济开发有限责任公司 | Passenger coach bearing dismounting machine |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109323804A (en) * | 2018-12-18 | 2019-02-12 | 中国航发沈阳发动机研究所 | A kind of anti-extrusion deformation formula gas circuit leakage test part support construction |
| CN112059534A (en) * | 2020-09-07 | 2020-12-11 | 新子元(上海)科技发展有限公司 | Hot-assembling method for improving difficulty in assembling parts |
| CN112378305A (en) * | 2020-11-02 | 2021-02-19 | 杭州汽轮机股份有限公司 | Cylindrical pin assembling method based on interference magnitude control |
| CN112378305B (en) * | 2020-11-02 | 2022-05-24 | 杭州汽轮机股份有限公司 | Cylindrical pin assembling method based on interference magnitude control |
| CN114850781A (en) * | 2022-05-10 | 2022-08-05 | 中国水利水电夹江水工机械有限公司 | Assembly method of winding drum and winding drum shaft of large ship lift |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20190925 Address after: 211100, No. 1 East Tianyuan Road, Jiangning District, Jiangsu, Nanjing Applicant after: Nanjing High Speed Gear Manufacturing Co., Ltd. Applicant after: Nanjing High Precision Transmission Equipment Manufacturing Group Co., Ltd. Address before: 211100, No. 1 East Tianyuan Road, Jiangning District, Jiangsu, Nanjing Applicant before: Nanjing High Speed Gear Manufacturing Co., Ltd. |
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| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20200513 Address after: 211100, No. 1 East Tianyuan Road, Jiangning District, Jiangsu, Nanjing Applicant after: NANJING HIGH SPEED GEAR MANUFACTURING Co.,Ltd. Address before: 211100, No. 1 East Tianyuan Road, Jiangning District, Jiangsu, Nanjing Applicant before: NANJING HIGH SPEED GEAR MANUFACTURING Co.,Ltd. Applicant before: Nanjing High Precision Transmission Equipment Manufacturing Group Co., Ltd. |
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| TA01 | Transfer of patent application right | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181207 |
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| RJ01 | Rejection of invention patent application after publication |